6623620 has 24 divisors (see below), whose sum is σ = 14120064. Its totient is φ = 2609376.

The previous prime is 6623611. The next prime is 6623707. The reversal of 6623620 is 263266.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1132 + ... + 3811.

It is an arithmetic number, because the mean of its divisors is an integer number (588336).

Almost surely, 2^6623620 is an apocalyptic number.

It is an amenable number.

6623620 is an abundant number, since it is smaller than the sum of its proper divisors (7496444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6623620 is a wasteful number, since it uses less digits than its factorization.

6623620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019 (or 5017 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 6623620 is about 2573.6394463872. The cubic root of 6623620 is about 187.8012461153.

Adding to 6623620 its reverse (263266), we get a palindrome (6886886).

The spelling of 6623620 in words is "six million, six hundred twenty-three thousand, six hundred twenty".